（图片仅供参考）
A standardized categorization of artificial satellites based on their wet mass, including fuel. The primary classes are minisatellites (100–500 kg), microsatellites (10–100 kg), nanosatellites (1–10 kg), picosatellites (0.1–1 kg), and femtosatellites (<100 g). This classification provides a common language for engineers, manufacturers, and launch providers to define mission scale, technical requirements, and cost estimations.
基于质量的小型卫星分类为航空航天工业提供了一个至关重要的框架。早期的卫星通常是大型的整体式平台，但小型化趋势要求采用更精细的术语。该系统并非由国际机构严格定义，而是通过普遍使用而逐渐成为事实上的标准。“湿质量”指标至关重要，因为它包含了发射时的所有推进剂和消耗品，从而全面反映了卫星对运载火箭的需求。
Each class is associated with typical mission profiles. Minisatellites, at the upper end, can still perform complex, multi-instrument science missions or serve as operational telecommunications relays. Microsatellites marked the first major step in miniaturization, often used for technology demonstration, store-and-forward communications, and remote sensing. The nanosatellite class is dominated by the CubeSat standard and is a popular choice for universities and startups. Picosatellites and femtosatellites represent the frontier of miniaturization, often tested as ‘chip-sats’ or for highly specialized, short-duration missions. This classification directly influences design philosophy, from redundancy levels to component selection (e.g., commercial-off-the-shelf vs. space-grade).
小型卫星：基于质量的分类
（如果日期未知或不相关，例如“流体力学”，则提供其显著出现的近似估计）
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